What happens when a sculptor has to find a way around a 100-year-old copyright.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This elaborate towering structure was once famed for its revolutionary height.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Eighty million natural history specimens call this gargantuan museum home.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Macabre astrological automaton clock dating to the late 1400s.

Elevated freight railway turned wildly successful urban park.

One of the largest busts in the world celebrates the German city's erstwhile namesake.

A Saxony castle houses one of the largest and most outstanding mineral collections in the world.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

This ancient sword lay in a waterlogged tomb for 2,500 years, but managed to remain relatively untarnished and impressively sharp.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

Fantastic views and thousands of love locks.

France's most famous cemetery, with some of its most curious tombs.

Paris' linguistic guide to the international language of, yes, love.